FUSE + SPD 1 IN 1 OUT 1000V Advanced interface designed for seamless grid integration and optimized energy management. 2 IN 2 OUT 600V Advanced interface designed for seamless grid integration and optimized energy management. 2 IN 2 OUT 1000V Advanced interface designed for seamless grid integration and optimized energy management. 3 IN 3 OUT 1000V Advanced interface designed for seamless grid integration and optimized energy management.